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class="page-top-share-next"><div class="poster-share" style="z-index:99;"><div class="poster-button" id="poster-button"><span class="aurora-iconfont-common aurora-poster-ico" data="7">生成海报3</span>  </div></div></div></div><!--[--><h1 id="linux进阶学习" tabindex="-1"><a class="header-anchor" href="#linux进阶学习" aria-hidden="true">#</a> Linux进阶学习</h1><h2 id="如何查看cpu信息" tabindex="-1"><a class="header-anchor" href="#如何查看cpu信息" aria-hidden="true">#</a> 如何查看CPU信息</h2><blockquote><p>[root@iZzj5iufefpw7dZ ~]# cat /proc/cpuinfo</p></blockquote><h2 id="查看占用cpu使用率最高的进程" tabindex="-1"><a class="header-anchor" href="#查看占用cpu使用率最高的进程" aria-hidden="true">#</a> 查看占用CPU使用率最高的进程?</h2><blockquote><p>ps aux</p></blockquote><p><strong>使用sort对cpu占用进行排序</strong></p><blockquote><p>ps aux | sort -nr -k3</p></blockquote><ul><li>sort # 排序命令</li><li>-nr # 默认使用字符串排序n代表使用数值进行排序，默认从小到大排序，r代表反向排序</li><li>k3 # 以第三列进行排序</li></ul><h2 id="如何查看一个文件的末尾50行" tabindex="-1"><a class="header-anchor" href="#如何查看一个文件的末尾50行" aria-hidden="true">#</a> 如何查看一个文件的末尾50行</h2><blockquote><p>tail命令，动态显示tail -f，制定50行 tail -n 50</p></blockquote><h2 id="如何过滤文件内容中包含-error-的行" tabindex="-1"><a class="header-anchor" href="#如何过滤文件内容中包含-error-的行" aria-hidden="true">#</a> 如何过滤文件内容中包含”ERROR “的行?</h2><blockquote><p>grep -o &quot;ERROR&quot; 文件名 cat 文件名 ｜ grep -o &quot;ERROR&quot;</p></blockquote><h2 id="linux查看某端口号" tabindex="-1"><a class="header-anchor" href="#linux查看某端口号" aria-hidden="true">#</a> linux查看某端口号?</h2><blockquote><p>netstat -anp | grep 端口号</p></blockquote><h2 id="查看某进程号" tabindex="-1"><a class="header-anchor" href="#查看某进程号" aria-hidden="true">#</a> 查看某进程号?</h2><blockquote><p>ps -ef | grep 进程名</p></blockquote><h2 id="grep和find的区别-grep都有哪些用法" tabindex="-1"><a class="header-anchor" href="#grep和find的区别-grep都有哪些用法" aria-hidden="true">#</a> grep和find的区别? grep都有哪些用法?</h2><blockquote><ul><li>grep模糊查询需要使用正则表达式，而find使用通配符</li><li>find搜索文件用通配符，grep搜索的是文件中的数据则需要使用正则表达式</li><li>grep 用法 <ul><li>grep &quot;xxx&quot; text.log :在文件test.log 中找出包含xxx的信息的行</li><li>grep -v &quot;xxx&quot;：排除xxx所在的行</li><li>grep -i &quot;xxx&quot;：不区分大小写</li></ul></li></ul></blockquote><h2 id="查看ip地址" tabindex="-1"><a class="header-anchor" href="#查看ip地址" aria-hidden="true">#</a> 查看ip地址？</h2><blockquote><p>ifconfig -a</p></blockquote><h2 id="创建和删除一个多级目录" tabindex="-1"><a class="header-anchor" href="#创建和删除一个多级目录" aria-hidden="true">#</a> 创建和删除一个多级目录?</h2><blockquote><p>mkdir -p 目录1/目录2/目录3 # 创建多级目录</p><p>rm -rf /目录 # 删除目录</p></blockquote><h2 id="在当前用户家目录中查找haha-txt文件" tabindex="-1"><a class="header-anchor" href="#在当前用户家目录中查找haha-txt文件" aria-hidden="true">#</a> 在当前用户家目录中查找haha.txt文件?</h2><blockquote><p>find ~/ -name haha.txt</p></blockquote><h2 id="如何查询出tomcat的进程并杀掉这个进程-写出linux命令" tabindex="-1"><a class="header-anchor" href="#如何查询出tomcat的进程并杀掉这个进程-写出linux命令" aria-hidden="true">#</a> 如何查询出tomcat的进程并杀掉这个进程，写出linux命令?</h2><blockquote><p>ps -ef | grep tomcat</p><p>kill -9 进程号</p></blockquote><h2 id="动态查看日志文件" tabindex="-1"><a class="header-anchor" href="#动态查看日志文件" aria-hidden="true">#</a> 动态查看日志文件?</h2><blockquote><p>tar -f test.log</p></blockquote><h2 id="查看当前机器listen的所有端口" tabindex="-1"><a class="header-anchor" href="#查看当前机器listen的所有端口" aria-hidden="true">#</a> 查看当前机器listen的所有端口?</h2><blockquote><p>netstat -lnp</p></blockquote><h2 id="把一个文件夹打包压缩成-tar-gz的命令-以及解压拆包-tar-gz的命令" tabindex="-1"><a class="header-anchor" href="#把一个文件夹打包压缩成-tar-gz的命令-以及解压拆包-tar-gz的命令" aria-hidden="true">#</a> 把一个文件夹打包压缩成.tar.gz的命令，以及解压拆包.tar.gz的命令?</h2><blockquote><p>打包命令：tar -czvf myetc.tar.gz</p><p>解压命令：tar -xzvf myetc.tar.gz</p></blockquote><h2 id="如何查询内存占用情况" tabindex="-1"><a class="header-anchor" href="#如何查询内存占用情况" aria-hidden="true">#</a> 如何查询内存占用情况</h2><blockquote><p>free 命令显示系统使用和空闲的内存情况</p><p>top 命令查看系统的实施负载，包括进程、cpu负载、内存使用等</p></blockquote><h2 id="linux下查看磁盘空间" tabindex="-1"><a class="header-anchor" href="#linux下查看磁盘空间" aria-hidden="true">#</a> Linux下查看磁盘空间</h2><blockquote><p>df -h # 查看磁盘各分区大小、已用空间等信息</p><p>du -sh foo # 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